purgatorial vs purging

purgatorial is not a noun while purging is a noun.

Word	Noun	Adjective	Verb	Adverb
purgatorial	No	Yes	No	No
purging	Yes	Yes	No	No

As adjectives, purgatorial and purging are synonyms defined as:

Other synonyms of purgatorial include purifying.

purgatorial (noun)	purging (noun)
	an act of removing by cleansing; ridding of sediment or other undesired elements
	the act of clearing yourself (or another) from some stigma or charge

purgatorial (adjective)	purging (adjective)
of or resembling purgatory	serving to purge or rid of sin
serving to purge or rid of sin